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toggleCheckState('xna',checked); process('memberList','filterElement','member');"><img id="xnaImage" onmouseover="mouseOverCheck(xnaImage,checkBoxSelectImage,checkBoxUnSelectImage,checkBoxSelectHoverImage,checkBoxUnSelectHoverImage)" onmouseout="mouseOutCheck(xnaImage,checkBoxSelectImage,checkBoxUnSelectImage,checkBoxSelectHoverImage,checkBoxUnSelectHoverImage)" src="../icons/ch_selected.gif" /> XNA Framework Only</div><br /><div id="compact" onclick="var checked=toggleCheck(compactImage); toggleCheckState('compact',checked); process('memberList','filterElement','member');"><img id="compactImage" onmouseover="mouseOverCheck(compactImage,checkBoxSelectImage,checkBoxUnSelectImage,checkBoxSelectHoverImage,checkBoxUnSelectHoverImage)" onmouseout="mouseOutCheck(compactImage,checkBoxSelectImage,checkBoxUnSelectImage,checkBoxSelectHoverImage,checkBoxUnSelectHoverImage)" src="../icons/ch_selected.gif" /> .NET Compact Framework Only</div></td><td class="line"><br /></td></tr></table><table class="members" id="memberList" cellspacing="0" frame="lhs"><tr><th class="iconColumn"> </th><th class="nameColumn">Member</th><th class="descriptionColumn">Description</th></tr><tr data="event; public; instance; declared; none; none"><td><img src="../icons/pubevent.gif" title="Public event" /></td><td><a href="8f4d5547-edc2-bd95-e82b-ffe7422def0a.htm">Changed</a></td><td><div class="summary">
2 The most important aspect of the Context interface is the Changed event that allows
3 the receiver of the event know when the user is changing patient and visit. Applications
4 need to change the data displayed to represent the currnet Patient and optional visit. The
5 Changed event occurs after there is confirmation that the change has not been vetoed or the
6 veto has been overridden. See Changing event.
7 </div></td></tr><tr data="event; public; instance; declared; none; none"><td><img src="../icons/pubevent.gif" title="Public event" /></td><td><a href="594231d1-4a00-9131-55df-e820ddd0f4ee.htm">Changing</a></td><td><div class="summary">
8 When the current patient or visit is being changed by the user, every subscriber to the
9 Changing method has the option to "Veto" the event by Cancelling it:
10 <div class="code"><table width="100%" cellspacing="0" cellpadding="0"><tr><th><span class="copyCode" onclick="CopyCode(this)" onkeypress="CopyCode_CheckKey(this, event)" onmouseover="ChangeCopyCodeIcon(this)" onmouseout="ChangeCopyCodeIcon(this)" tabindex="0"><img class="copyCodeImage" name="ccImage" align="absmiddle" title="Copy image" src="../icons/copycode.gif" />Copy Code</span></th></tr><tr><td colspan="2"><pre>
11 public void Startup()
12 {
13 if (this.Context != null)
14 {
15 this.Context.Changed += new EventHandler&lt;ContextChangedArgs&gt;(Context_Changed);
16 this.Context.Changing += new EventHandler&lt;ContextChangedArgs&gt;(Context_Changing);
17 }
18
19 void Context_Changing(object sender, ContextChangingArgs e)
20 {
21 e.Cancel = needToFinishSomethingElseBeforeChangingContext;
22 }
23 </pre></td></tr></table></div>
24 However, a Veto is like a U.S. presential Veto and that it can be overridden. The WinFramework
25 or EHR can override any Veto so all components (even if they veto changes) must be prepared to
26 have the context changed at anytime.
27 </div></td></tr></table></div></div><h1 class="heading"><span onclick="ExpandCollapse(seeAlsoToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(seeAlsoToggle, event)" tabindex="0"><img id="seeAlsoToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />See Also</span></h1><div id="seeAlsoSection" class="section" name="collapseableSection" style=""><div class="seeAlsoStyle"><a href="b341d542-b478-5f92-f3a5-daa4de7e7739.htm">Context Interface</a></div><div class="seeAlsoStyle"><a href="967b19db-76c2-6522-a316-b5c445dc4f22.htm">IndianHealthService.BMXNet.Model Namespace</a></div></div><div id="footer"><div class="footerLine"><img width="100%" height="3px" src="../icons/footer.gif" title="Footer image" /></div>
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